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Cheap flights from Sioux Falls to London from £171

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/4. Fares are subject to change and may not be available on all flights or dates of travel.
FSD — LON
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Sioux Falls to London

Enter your travel dates to find the best prices.

Cheapest flights from Sioux Falls to London
Explore the most affordable flight options available from Sioux Falls to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 November 2025.

Mon 1/1218:23FSD - LHR
1 stop10h 52mLufthansa
Mon 8/1209:30LHR - FSD
2 stops16h 51mLufthansa
Deal found 19/11£607
Wed 3/1213:55FSD - LHR
1 stop13h 45mUnited Airlines
Sun 7/1206:50LHR - FSD
2 stops21h 01mUnited Airlines
Deal found 18/11£617
Wed 3/1218:08FSD - LHR
1 stop11h 07mLufthansa
Sun 7/1211:35LHR - FSD
1 stop14h 46mLufthansa
Deal found 18/11£640
Mon 1/1213:30FSD - LCY
2 stops12h 40mKLM
Mon 8/1208:40LCY - FSD
2 stops17h 00mKLM
Deal found 19/11£673
Sun 14/1208:00FSD - LHR
1 stop21h 15mUnited Airlines
Sat 27/1207:40LHR - FSD
1 stop20h 16mUnited Airlines
Deal found 20/11£725
Sun 14/1213:55FSD - LHR
2 stops14h 55mLufthansa
Sat 27/1207:40LHR - FSD
2 stops42h 20mLufthansa
Deal found 20/11£747
Sun 14/1217:55FSD - LGW
1 stop34h 05mMultiple Airlines
Mon 29/1214:00LGW - FSD
1 stop25h 31mMultiple Airlines
Deal found 20/11£760
Fri 5/1213:30FSD - LCY
2 stops12h 40mDelta
Tue 9/1208:40LCY - FSD
2 stops37h 05mDelta
Deal found 19/11£770
Sun 14/1217:55FSD - LGW
1 stop34h 05mMultiple Airlines
Sun 28/1214:10LGW - FSD
2 stops25h 42mMultiple Airlines
Deal found 20/11£786
Sun 14/1217:55FSD - LGW
1 stop34h 05mMultiple Airlines
Sat 27/1214:00LGW - FSD
2 stops49h 11mMultiple Airlines
Deal found 20/11£792
Sun 14/1217:55FSD - LGW
1 stop34h 05mMultiple Airlines
Thu 1/114:00LGW - FSD
2 stops25h 52mMultiple Airlines
Deal found 20/11£823
Sun 14/1208:00FSD - LHR
2 stops17h 10mUnited Airlines
Mon 29/1206:50LHR - FSD
2 stops21h 06mUnited Airlines
Deal found 20/11£837

Cheap flight deals from Sioux Falls to London

Discover tips and strategies to find the most affordable flight options for your journey from Sioux Falls (FSD) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 November 2025.

Round-trip from

£437

One-way from

£171

Popular in

January

Cheapest in

May

Average price

£840
Delta
  • Delta
  • 29/4-1/5
  • 3 total stops
  • 37h 41m total
  • Sioux Falls to London
Search Deals
Delta
  • Delta
  • 27/4
  • 2 total stops
  • 18h 35m total
  • Sioux Falls to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£149 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£53 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Sioux Falls to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 November 2025.
Use the filters below to find and compare flights from Sioux Falls to London that are best for you.

Fly from

Sioux Falls

Fly to

London

Route

Depart

Return

Price

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 27/4

05:25-06:30

1 stop19h 05m

London Heathrow

Wed 29/4

06:30-22:46

2 stops22h 16m

£437

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 22/4

10:58-13:10

1 stop20h 12m

London Heathrow

Tue 28/4

11:45-22:46

2 stops17h 01m

£499

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 27/4

05:25-06:30

1 stop19h 05m

London Heathrow

Wed 6/5

06:30-19:06

2 stops18h 36m

£499

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 1/4

13:20-13:10

1 stop17h 50m

London Heathrow

Wed 22/4

06:30-15:28

2 stops14h 58m

£499

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Wed 22/4

13:20-13:10

1 stop17h 50m

London Heathrow

Fri 1/5

08:40-19:06

2 stops16h 26m

£499

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Sun 29/3

10:58-13:10

1 stop20h 12m

London Heathrow

Thu 23/4

06:30-19:06

2 stops18h 36m

£499

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Mon 30/3

13:20-09:15

2 stops13h 55m

London Heathrow

Thu 23/4

06:30-15:28

2 stops14h 58m

£502

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 31/3

13:20-13:30

2 stops18h 10m

London Heathrow

Wed 22/4

06:30-19:06

2 stops18h 36m

£502

Sioux FallsLondon

FSD - LHR

FSDLHR

Sioux Falls Joe Foss Field

Tue 28/4

10:58-10:50

2 stops17h 52m

London Heathrow

Fri 1/5

08:40-22:46

2 stops20h 06m

£502

Sioux FallsLondon

FSD - LGW

FSDLGW

Sioux Falls Joe Foss Field

Mon 30/3

17:55-10:00

2 stops34h 05m

London Gatwick

Wed 22/4

14:00-08:45

1 stop24h 45m

£524

Flights are sorted by cheapest return flights first.

Deals found on 20/11

Showing 1-10 of 57 results
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Best time to book a flight from Sioux Falls to London

Have a flexible travel schedule? Discover the best time to fly to London from Sioux Falls with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sioux Falls to London

What is the cheapest month to book a flight from Sioux Falls to London?

Currently, September is the cheapest month in which you can book a flight from Sioux Falls to London (average of £499). Flying from Sioux Falls to London in May is currently the most expensive (average of £863). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Sioux Falls to London?

What’s the top stopover airport for flights from Sioux Falls to London?

Share of one-stop return flights from Sioux Falls to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Minneapolis (MSP) – chosen by Cheapflights users on 67% of one-stop itineraries from Sioux Falls to London on Cheapflights.

What’s the cheapest stopover airport for flights from Sioux Falls to London?

Average return fare for one-stop flights from Sioux Falls to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Chicago (ORD) is the most affordable one-stop option, with an average return flight price of £570.

What’s the fastest stopover option from Sioux Falls to London?

Shortest average travel time for one-stop one-way flights from Sioux Falls to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Chicago (ORD) have the shortest average one-way travel time for one-stop routes: 10h 30m.

Which airport typically offers the quickest stopover for flights from Sioux Falls to London?

Average stopover duration for one-stop one-way flights from Sioux Falls to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 1h 28m.

Related info for your journey

Find useful and relevant information for your journey from Sioux Falls to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Sioux Falls to London?

    For a flight from Sioux Falls to London, you will be flying from Joe Foss Field. Sioux Falls Joe Foss Field (FSD) is just 2.6 mi from the center of the city. Joe Foss Field is the only Sioux Falls airport and it handles 0 outbound flights to London per day. 0 airlines have flights to London from Sioux Falls Joe Foss Field on a regular basis.

  • How long is the flight from Sioux Falls to London?

    For as low as £437, Delta can have you in London from Sioux Falls in 19h 05m. The distance from Sioux Falls to London is about 4189 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Sioux Falls to London?

    The most popular route from Sioux Falls to London is Sioux Falls Joe Foss Field - London Heathrow. You may also consider Sioux Falls Joe Foss Field - London City or Sioux Falls Joe Foss Field - London Gatwick.

  • Can I find deals for flights from Sioux Falls to London that include hotel bookings?

    Yes. In addition to deals on Sioux Falls to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Sioux Falls to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sioux Falls to London.

  • Can I find deals for business class flights from Sioux Falls to London?

    Yes. Cheapflights offers flight deals from Sioux Falls to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Sioux Falls to London?

    Currently, September is the cheapest month in which you can book a flight from Sioux Falls to London (average of £499). Flying from Sioux Falls to London in May is currently the most expensive (average of £863). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Sioux Falls to London

See prices for flight routes from nearby airports that may be better suited for you.
Sioux Falls to Heathrow flights
Rapid City to Heathrow flights
Sioux Falls to Gatwick flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Sioux Falls to London?

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Why should you use Cheapflights to find cheap flight tickets from Sioux Falls to London?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Sioux Falls to London for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Sioux Falls to London with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Sioux Falls to London, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Sioux Falls to London become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Sioux Falls today and book when prices fit your budget.

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